diff --git a/gcs/CHANGES.txt b/gcs/CHANGES.txt
index 7367143f30..7bc3e8d3ae 100644
--- a/gcs/CHANGES.txt
+++ b/gcs/CHANGES.txt
@@ -16,6 +16,8 @@
         fs.gs.proxy.username (default: null)
         fs.gs.proxy.password (default: null)
 
+  3. Update Apache HttpClient to the latest version.
+
 
 1.9.7 - 2018-09-20
 
diff --git a/pom.xml b/pom.xml
index 51c34ad527..71279415c7 100644
--- a/pom.xml
+++ b/pom.xml
@@ -98,9 +98,7 @@
     <apache.avro.version>1.7.7</apache.avro.version>
     <google.gson.version>2.2.4</google.gson.version>
 
-    <!-- Keep in sync with google-api-client dependency -->
-    <apache.httpcomponents.version>4.0.1</apache.httpcomponents.version>
-
+    <apache.httpcomponents.version>4.5.6</apache.httpcomponents.version>
     <google.api.version>1.25.0</google.api.version>
     <google.api-bigquery.version>v2-rev402-${google.api.version}</google.api-bigquery.version>
     <google.api-storage.version>v1-rev136-${google.api.version}</google.api-storage.version>
@@ -400,11 +398,6 @@
         <artifactId>httpclient</artifactId>
         <version>${apache.httpcomponents.version}</version>
       </dependency>
-      <dependency>
-        <groupId>org.apache.httpcomponents</groupId>
-        <artifactId>httpcore</artifactId>
-        <version>${apache.httpcomponents.version}</version>
-      </dependency>
       <dependency>
         <groupId>org.apache.avro</groupId>
         <artifactId>avro</artifactId>